Frequently Asked Questions

Back to all FAQs

question

As a plant manager inheriting a 15-year-old production line with mixed Siemens S7-300 and Mitsubishi FX PLCs, what's the smartest migration path to modern automation without causing 6 months of production downtime?

GenesisBarnes

GenesisBarnes

2025-12-16

answer

Hey there! I totally get your situation - inheriting a 15-year-old production line with mixed PLC brands is like walking into a tech time capsule. The good news is you don't have to shut down for 6 months! Here's a smart, phased approach:

1. Start with a parallel system approach

For Siemens S7-300, use Siemens' TIA Portal migration tools to convert to S7-1500. For Mitsubishi FX, migrate to iQ-F series (FX5U) or iQ-R series using Mitsubishi's conversion tools. The key is to build the new system alongside the old one.

2. Phase it by production sections

Don't try to upgrade everything at once. Pick non-critical sections first, test thoroughly, then move to more critical areas. This way, you maintain production while upgrading.

3. Consider standardizing on one platform

Since you have mixed systems, this might be the perfect time to pick either Siemens or Mitsubishi as your standard going forward. This simplifies future maintenance and reduces spare parts inventory.

4. Use available migration tools

Both manufacturers offer excellent migration paths. Siemens has solid S7-300 to S7-1500 tools, and Mitsubishi provides good FX to newer series conversion support.

5. Plan for weekend/off-hour cutovers

Schedule the actual switchovers during planned maintenance windows or weekends to minimize production impact.

The smartest path is a gradual, well-planned migration rather than a big-bang replacement. You'll get modern automation benefits without the production nightmare!

Recent Q&A

Quickly browse the latest questions and answers

Contact form